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HomeMy WebLinkAboutNC0000572_Dan River Stormwater Permit Application_20140730DUKE ENERGY® July 30. 2014 Mr. Bradley Bennett, Supervisor North Carolina Department of Environment and Natural Resources Division of Energy, Mineral & Land Resources Stormwater Permitting Program 1612 Mail Service Center Raleigh, North Carolina 27699-1612 Duke Energy Dan River Combined Cyce Station 864 South Edgewood Road Eden, NC 27288 (335) 635-3000 OFFICE Subject Duke Energy Carolinas LLC — Dan River Combined Cycle Station Stormwater Permit Application Dear Mr. Bennett Duke Energy Carolinas, LLC requests a stormwater discharge permit for Dan River Combined Cycle Station located in Rockingham County Enclosed is a check in the amount of $860 for the subject stormwater permitting fee and three sets of the following documents related to this permit request EPA Form 1 EPA Form 2F EPA Form 2F Supplemental Information Available Stormwater Analytical Data Site Location Map Site Stormwater Plan Drawings Historical data have not been included because it is obsolete owing to the many significant changes this facility has undergone in recent years The stormwater outfall nomenclature has also been revised from previous submittals There are two stormwater plan drawings, one which depicts current status and the other projects future stormwater outfalls If additional information is needed, please advise Should you have questions regarding this application, please contact Allen Stowe at {704} 382-4309 or Allen. Stowe duke- energy.com Sincerely, Glenn Harris General Manager ll, CC/CTs Check Date: Ju113012014 Vendor Number: 0000071949 Name: STATE OF NORTH CAROLINA DEPARTMENT OF Check Number: 1000121292 Invoice Number Invoice Date Voucher ID Gross Amount Discounts Taken Late Charlie Paid Amount 07292014DR Jul/2912014 10662171 86000 0.00 0.00 860 i"0 Check Number: Dole Total Gross Amount Total Discounts Total Late Ch4rges Tolal Paid Amount 1000121292 Jul/3012014 S860.D0 50.00 $0.00 5850.00 DUKE ENERGY NAP.IE AND LOGO ARF ON BACK. HOLD AT AN ANGLE TO V�EW. V010 IF ABSENT. Duke EnuU Busirten Services 1000121242 DUKE 400 South Tryon StreetJPMORGAN CHASE BANK, N -A - ENERGY. Chatiotk, NC 28285 #s � G "�7 Symcuse, NY 5"371213 Corporate Accounts Payable y ST25B 1 400 South Tryon Street y�:: i • ' : �, `y a ! kI - �t ; • r Charlotte, NC 28285 4; Date 7130114 r �' y ��• 1 Pay Bight hundred sixty acrd xr / 100 Dollars To The IN Order or STATE OF NORTH CAROLINA DEPARTMENT OF + ENVIROMENT AND NATURAL RESOURCES DIV OF ENERGY MINERAL AND t LAND RESOURCES 1 b tf r Al . 1612 MAIL SERVICE CENTER r `� Raleigh, NC 27699-1612 -'t ����� R �e•�'P °'. 4:.a ..'. -; ;._ � +r.. `,:- >�. _._ `. -. - ..-.... � 1 ,�`�.+o r°:.. rt -. i. -. s.iAi� L?.4,.-_1 ., .�. '.�.gL�y}r{��S Please print or type to the unshaded areas only Form Approved OMB No 2040.0088 - FORM U S ENVIRONMENTAL PROTECTION AGENCY I EPA ID NUMBER \=.EPA GENERAL INFORMATION , „� r Consolidated Permits Program F NC 0 0 0 3 4 6 8 GENERAL (.•-b:r,Irk, i, n:•ru; Invinscluun ' .ore sturi. s!) D '31 u 1 is LABEL ITEMS GENERAL INSTRUCTIONS If a preprinted label has been provided• affix it in the J ERA I.D. NUMBER designated space Review the information carefully rf any of t is incorrect• crass through it and enter the correct data in the appropriate Ukri area below Also, it any of the preprinted data III FACILITY NAMEis PLEASE PLACE LABEL IN THIS SPACE absent (the area to the teff of the label space lists the information that sh0vAd appear) please provide it in the proper V FACILITY MAILING fill-in area(s) below It the label is complete and correct. you need not complete Items 1 Ill, V and VI (except VI -B which ADDRESS must be completed regardless) Complete all nems A no label has been provided Refer to the instructions for detailed item VI FACILITY LOCATION descriptions and for the legal authorizations under which this data is collected. II POLLUTANT CHARACTERISTICS INSTRUCTIONS Complete A through J to determine whether you need to submit any permit application forms to the EPA. If you answer -yes' to any questions you must submit this form and the supplemental form listed in the parenthesis following the question Mark 'X' n the box in the thins column if the supplemental form is attached If you answer'no' to each question, you need not submit any of these forms. You may answer'no' if your activity is excluded from permit requirements, see Section C of the instructions. See also Section 0 of the instruct ons for definitions of bold-faced terms Mark 'r Mrk -k" SPECIFIC QUESTIONS YE.No ATTACIIEO SPECIFIC QUESTIONS res No RM A Is this facility a publicly owned treatment works whichFORM results in a discharge to waters of the U.S.? (FORM 2A) X ATTACCHED B Does or will this facility (either existing or proposed) include a concentrated animal feeding operation or X aquatic animal production facility which results in a +' +e discharge to waters of the U.S.? (FORM 2B) s m „ C Is this a facility which currently results in discharges toD waters of the U.S. other than those X Is this a proposed facility (other than those described in A described in A or B or 8 above) which will result in a discharge to waters of I X above? (FORM 2C) the U.S.? (FORM 2D) N E Does or will this facility treat, store or dispose of hazardous wasles7 (FORM 3) X n at F Do you or will you inject at this fad ity industrial or mun opal effluent below the lowermost stratum X conta ning within one quarter mile of the wellbore, to underground sources of drinking water? (FORM 4) G Do you or will you inject at this facility any produced waterH 31 X Do you or coil. you inject at this facility fluids for special or other fluids which are brought to the surface in connection with conventional oil or natural X processes such as mining of sulfur by the Frasch process gas production. inject fluids used for enhanced recovery I solution m ping of minerals, in situ combustion of fossil X of o or natural fuel or recovery of geothermal energy? (FORM 4;, gas, or inject fluids for storage of liquid hydrocarbons? (FORM 4) s. 34 I Is this facility a proposed stationary source which is one 37 b .Y J Is this fadlty a proposed stationary source which is of the 28 industrial categories listed in the instructions and �. which will potentially emit 100 tons per year of any air X NOT one of the 28 industrial categories listed in the X instructions and which will potentially emit 250 Ions per pollutant regulated under the Clean Air Act and may affect I I year of any air pollutant regulated under the Clean Air Act or be located in an attainment area? (FORM 5) a 4, 47 and may affect or be located in an attainment area? 43 « w (FORM 5) Ill NAME OF FACILITY SKIP pan River Com1bined Cycle Station J1c is re s to IV FACILITY CONTACT so A NAME & TITLE (lust, first, R frrle) c B PHONE (urea c xie R nn.) 2 S owe, J. Allen Lead Environmental Specialist ( 0 ) 3 2-4 0 I,e a! 4e M V FACILTY MAILING ADDRESS A STREET OR P.O BOX J33 P.O. Box 1006 Intern fice Mail - EC13K +s m 43 B CITY OR TOWN c C STATE I D ZIP CODE 4 Charlotte C 2 2 1 ,s ,e 40 al 42 1 47 lr VI FACILITY LOCATION A. STREET, ROUTE NO. OR OTHER SPECIFIC IDENTIFIER 15.1 814 Sou h Edgewood Drive rs ,e u B COUNTY NAME Rocking am C CITY OR TOWN ro D STATE I E. ZIP CODE I F COUNTY CODE (it knoun) c e R e C 11242148 7 s +e EPA Form 3510.1 (8-90) CONTINUE ON REVERSE SIC CODES (4-di_ait. on order of prix A, 4911 �leccrt- �e l C. A NAME 8 Duke Energy Carolinas, LLC sa � C STATUS OF OPERATOR (l3ticrM4 upprr-priaicletter ininthe uteruerhu.r if '(Jther M - PUBLIC (nrl.:r mutt /identl iw vote) p l+/x-r1.i S = STATE ) P = PRIVATE 0 = OTHER (ipt. -ij x E. STREET OR P.O. BOX 4121 South Church Street Charlotte r'l-alltrfitev If NC0003468 +e B. UIC R:iulrnrr,ntrd Lnrvf r r C RCRA Hu=:m/utrn If; NCD024666535 8.15 the name listed in Item VIII -A also the owner 0 YES ❑ NO PHONE ('L 1) Mill' & nu J (704) 382-4309 r r Is the facility NC 28242 ❑ YES 03455T30 (Title V Air) 7$Odl�R02 r r r . . . i I(FheareJlI A id WQ0000452 an Ind 0 NO Of R{—J OA' Salida - - a XI MAP Attach to this application a lopograph c map of the area extending to at least one mi a beyond property boundaries. The map must show the outline of the facility the location of each of its existing and proposed intake and discharge structures, each of its hazardous waste treatment, storage, or disposal facilities and each well where it injects fluids underground Include all springs, rivers and other surface water bodies in the map area. See instructions for precise requirements XII NATURE OF BUSINESS (provide a brief description) Sas Fired E_ecrt is Generation XIII CERTIFICATION (sec instructions) i certify under penalty of faw that t have personally examined and am familiar with the information submitted in this application and all attachments and that based on my inquiry of those persons immediately responsible for obtaining the information contained in the application 1 believe that the information is true accurate and complete t am aware that there are significant penalties for submitting false information, including the possibility of Ane and imprisonment A NAME 8 OFFICIAL TITLE (rtpL• ear prior) B SIGNATURE C DATE SIGNED Glenn Harris, General Mgr II, 4 CC/CTs COMMENTS FOR OFFICIAL USE ONLY EPA Form 3510-1 f.8-90) EPA ID Number (ropy fromltem 1 of Form 1) Form Approved OMB No 2040-0086 Please print or type in the unshaded areas only NC00003468 Approval expires 5-3192 A U.S Environmental Protection Agency FORM Washington DC 20460 2F-` pq Application for Permit to Discharge Storm Water NPDES Discharges Associated with Industrial Activity Paperwork Reduction Act Notice Public reporting burden for this application is estimated to average 28 6 hours per application, including time for revie ung inslructicns. searching existing data sources gathering and maintaining the data needed, and completing and reviewing the collection of information Send comments regarding lure burden estimateany other aspect of this collection of information, or suggestions for improving this form, including suggestions which may increase ar reduce this burden to Chief Information Po cy Branch, PM-223, U 5 Environmental Protection Agency, 1200 Pennsylvania Avenue NW Washington DC 2046x, or Director Office of Information and Regulatory Affairs, Office of Management and Budget, Washington, DC 20503 (.Outfall Locatlan For each outfall, list the latitude and longitude of its location to the nearest 15 seconds and the name of the receiving water. A. outfall Number D Receiving Water (list) B Latitude C Longitude (name) See attached Sur atta,,.ed supplemental informati-n 11. Improvements A Are you now required by any Federal. State or local authority to meet any implementation schedule for the construction, upgrading or operation of wastewater treatment equipment or practices or any other environmental programs which may affect the discharges described in this applicaton7 This includes but is not limited to, permit conditions administrative or enforcement orders, enforcement compliance schedule letters. stipulations. court orders. and grant or loan conditions 2. Affected Outfalls 4 F nal 1 Identification of Conditions, Compliance Date Agreements, Etc. number source of discharge 3 Brief Description of Project a req b proj N/A B You may attach additional sheets describing any additional water pollution (or other environmental projects which may affect your discharges) you now have under way or which you plan Indicate whether each program is now under way or planned, and indicate your actual or planned schedules for construction III. Site Drainage Map Attach a site map showing topography (or indicating the outline of drainage areas served by the outtalls(s) covered in the application if a topographic map is unavailable) depicting the facility including each of its intake and discharge structures, the drainage area of each storm water outfall, paved areas and buildings within the drainage area of each storm water outfall each known past or present areas used for outdoor storage of disposal of significant materials each existing structural control measure to reduce pollutants in storm water runoff materials load ng and access areas areas where pesticides, herbicides soil conditioners and fertilizers are applied; each of its hazardous waste treatment storage or disposal units (including each area not required to have a RCRA permit which is used for accumulating hazardous waste under 40 CFR 262.34) each well where fluids from the fax rty are injected underground springs, and other surface water bodies which received storm water discharges from the facility EPA Form 3510-2F (1-92) Page 1 of 3 Continue on Page 2 Continued from the Front IV. Narrative Description of Pollutant Sources A For each outfall provide an estimate of the area (mcludr, w. rise of imperious surfaces (including paved arras a-d building roofs) drained Io the ct�tfali, and an estimate of the total surface area drained by the outfall Outfall Area of Imperv'ous Surfar.:e Total Area Drained outfall Arca of Impervious Surface Tota Area drained Number (provide unds) (Prowde unds) Number (provide unrfs? M..'cvide .errs) See attached supp?rm:rnra'. information B Provide a narrative description of sign ficant materials that are currently or in the past three years have been treated stored or disposed in a manner to al ow exposure to storm water; method of treatment, storage or d sposal, past and present materials management practices employed to minimize contact by these materials with storm water runoff materials load ng and access areas, and the location, manner and frequency in which pesticides herbicides, soil conditioners, and fertiilzers are applied See attached supplemental inf-ration C For each outfall, provide the location and a description of exist ng structural and nonstructural control measures to reduce pollutants in storm water runoff; and a description of the treatment the storm water receives, includ ng the schedule and type of maintenance for control and treatment measures and the u timate d'sposal of any solid or fluid wastes other than by discharge. outfall List Codes from Number Treatment Table 2F-1 _= utta-hAd supplLm--nta; inEar}atia_, V. Nonstormwater Discharges A. 1 certify under penalty of law hat the oulfall(s) covered by this application have been tested or evaluated for the presence of nonstormwater discharges and that all nonstormweler discharged from these outfall(s) are identified in either an accompanying Form 2C or From 2E application for the outfall. Name and official Title (type or print) Signature Date Signed Glenn Harris/General Mgr,II A- B Provide a description of the method used, the date of any testing and the onsite drainage points that were directly observed during a test Visual inspection was performed on 7/3/2014. Stormwater outfalls were inspected following a period of dry weather of at lea-t 72 hours duration to determine if any process water was discharging. Groundwater was observed co be discharging from ;Wr -. VI. Significant Leaks or Spills Provide existing information regarding the history of significant leaks or spills of toxic or hazardous pollutants at the facility in the last three years including the approximate date and location of the spill or leak, and the type and amount of material released. n February 2, 2014, there was a significant ash wastewater spill believed to contain constituents in excess of rep crab, uantities set forth by Section 311 of the Clean water Act or Section 102 of CERChA. EPA Form 3510-21" (1-92) Page 2 of 3 Continue on Page 3 EPA ID Number (copy from item t of Form 1) Continued from Page 2 F, C-0003468 VII. Discharge Information A, B C, & D. See instructicns before proceeding Complete one set of tables for each outfall Annotate the outfall number in the space provided Table VII -A, VIi-8, VIi-C are included on separate sheets numbers VII -1 and V1I-2 E Potential discharges not covered by analysis - is any toxic pollutant listed in table 2F.2, 2F-3 or 2F4, a substance or a component of a substance which you currently use or manUfaCIL re as an intermediate or final product or byproduct? ❑ Yes (;fist al. such pollutants below) Q No (go to Section 1X) VIII. Biological Toxicity Testing Qata Do you have any knowledge or reason to believe that any biological test for acute or chronic toxicity has been made on any of your discharges or on a receppng water in relation to your discharge within the last 3 years? ❑ Yes (list all such pollutants below) 0 No (go to Section IX) Toxicity testing f;as be -en performed i, association with NPDES wastewater discharge outfall 0,7. No toxicity testing has been performed for the etormwater outfa.ls. IX. Contract Analysis Information Were any of the analyses reported in Item VIl performed by a contract laboratory or consulting firm? © Yes (list the name, address, and telephone number o/ and pollutants ❑ No (go to Section X) analyzed by, each such laboratory or firm below) A Name B Address C Area Code & Phone No D, Pollutants Analyzed Pace Analytical Services, Inc 9900 Kincey Ave., suite 100 704-975-9092 Oil& Grease Huntersville, NC 29073 Duke Power Company LLC d/b/a 13339 Hagers Ferry Road 7D4-975-5245 All additional parameters Duke Energy Carolinas, LLC Huntersville, NC 23079 7929 COD,C1,F,sulfate,Hg,A1,Ha,8, Ca,hardness,Fe,Mg,Mn,Zn,Sb, As,Cd,Cr,Cu,Pb,Mo,Ni,Se,Tl, TDS,TSS X. Certification 1 certify under penalty of law that this document and all attachments were prepared under my direction or supervision in accordance with a system designed to assure that qualified personnel properly gather and evaluate the information submitted. Based on my inquiry of the person or persons who manage the system or those persons directly responsible for gathenng the information, the information submitted is, to the best of my knowledge and belief true accurate and complete I am aware that there are sign iicant penalties for submitting false information, including the possibility of fine and imprisonment for knowing violations. A, Name & Official Title (Type Or Print) B Area Code and Phone No Glenn Harris /Gen Mgr Il CC/CTs 036, 635-3080 C. Signature D Date Signed EPA Form 3510-217 (1-92) Page 3 of 3 EPA ID Number (copy from Item 1 of Form 1) Form Approved OMS No 2040-0086 SC0003468 Approval expires 5-31-92 VII. Discharge information (Continued from page 3 of Form ZF) Part A — You must provide the results of at least one analysis for every pollutant in this table Complete one table for each outfall. See instructions for additional details Maximum Values Average Values (include units) (include units) Number Pollutant Grab Sample Grab Sample of and Taken During Taken During Storm CAS Number First 20 Flow-Weighted First 20 Flow-Weighted Events (if available) Minutes Composite Minutes Composite Sampled Sources of Pollutants Oil and Grease NIA (see attached analytical results Biological Oxygen Demand (8005) for the various SW outfalls) Chemical Oxygen Demand (COD) Total Suspended Solids (TSS) Total Nitrogen Total Phosphorus pH Minimum Maximum Minimum Maximum Part B — List each pollutant that is limited in an effluent guideline which the facility is subject to or any pollutant listed in the facility's NPDES permit for ils process wastewater (if the facility is operating under an existing NPDES permit). Complete one table for each outfall. See the instructions for additional details and requirements. Maximum Values Average Values (include units) {include units) Number Pollutant Grab Sample Grab Sample of and Taken During Taken During Storm CAS Number First 20 Flow-Weighted First 20 Flow-Weighted Events (davailable) Minutes Composite Minutes Composite Sampled Souris of Pollutants (See attached analytical results for the various SW outfalls) EPA Form 3510-2F (1.42) Page VII-1 Continue on Reverse Continued from the Front Part C - List each pollutant shown in Table 2F-2, 2F-3, and 2F-4 that you know or have reason to believe is present See the instructions for additional details and requirements Complete one table for each outfall Maximum Values Average Values (include units) (include units) Number Pollutant Grab Sample Grab Sample of and Taken During Taken During Storm CAS Number First 20 Flow-Weighted First 20 Flow-Weighted Events (if available) Minutes Composite Minutes Composite Sampled Sources of Pollutants (see attached analytical results f::r the various stormwater outfalls. Pan D — Provide data for the storm event(s) which resulted 'n the maximum values for the now weighted composite sample. 4 5 1 2 3 Number of hours between Maximum Sow rate during e. Date of Duration Total rainfall beginning of storm measured rain event Total flow from Storm of Storm Event during storm event and end of previous (gallonavrninute or rain event Event (in minutes) (in inches) measurable rain event specify units) (gallons or specify units) other attached analytical results for the various stormwater outfalls 7. Provide a description of the method of Sow measurement or estimate. Flcw data derived from a theoretical flow calculation using local meteorol;gi,al data and contributing watershed area of the area outfalls, EPA Form 3510-2F (1.92) Page VII-2 Dan River Combined Cycle Station Stormwater Supplemental information General Facility Description The Dan River Combined Cycle Station is a 620 -megawatt (MW) natural gas facility located in Rockingham County, NC near the city of Eden. The facility is located on the same property as the retired Dan River Steam Station. The three coal fired units (Units 1,2, and 3) of the Dan River Steam Station were retired in April 2012. The remaining facilities and the combustion turbines (Unit 4, 5, and 6) of the Steam Station were retired in October 2013. Commercial operation of the Dan River Combined Cycle Station began on December 10, 2012. The Combined Cycle plant utilizes state-of-the-art air emissions control devices like selective catalytic reduction (SCRs) and oxidation catalyst to reduce air emissions. These controls combined with the retirement of the older coal units has and will continue to greatly reduce nitrogen oxide, sulfur dioxide, and carbon monoxide emissions at the site. Dan River CC has a Stormwater Pollution Prevention Plan (SWPPP) and uses the best management practices outlined in the SWPPP to minimize the risk of polluting stormwater. Stormwater Outfall Descriptions The following descriptions serve to further narrate the existing and future defined storm water outfalls for the Dan River Steam Station site and the existing precautionary measures in each drainage area. Storm Water Outfall SWO01 and Former SWO02 o Discharge Structure: 48 -inch and 36 -inch diameter RCP o Location: South of Combined Cycle Station o Drainage area: 17.42 acres and 2.34 acres o Area Description: This outfall conveys the majority of storm water flows from generated from the Combined Cycle Station. Areas include the Substation, Admin building, Generator and Steam Turbine buildings, Clarifier, Clarifier Filters, and Filter Press. o Material Storage/Controls: Chemical and Fuel/Oil storage details can be found on the existing SWPPP document for the Combined Cycle Station and accompanying Figure 2. Secondary containment is provided for all chemical and fuel/oil storage. Additionally, protocols are in place to manage storm water accumulation in open air secondary containment areas. Valves in these areas remain in the closed position until criteria are met to release accumulated storm water into the drainage system. Storm Water Outfall SWO03 o Discharge Structure: 3 12 -inch diameter steel culverts o Location: West of the steam station powerhouse building o Drainage area: 1.02 acres o Area Description: This outfall conveys flows from the laydown yard and storage area to the west of the steam station powerhouse building. All flow in the drainage area flows overland to a ditch leading to the outfall. Drainage area is gravel and grassed. o Material Storage/Controls: Spare equipment, parts, steel, iron, cable, and miscellaneous supplies are stored in the relatively flat gravel area. Some fabrication work may also be performed in the area associated with the steam station decommissioning effort. Equipment and supplies stored in the laydown area generally do not contain liquid. Former NPDES Outfall 004 o Discharge Structure: 10 -foot diameter corrugated steel pipe o Location: Service water settling pond outfall pipe o Drainage area: 147 acres on-site and 600 acres offsite o Area Description: This outfall conveys overflows from the service water settling pond. This includes the outfalls for the Combined Cycle Station and off-site residential and urban areas. o Material Storage/Controls: On-site controls are addressed within the SW001 and SW002 outfalls. • Storm Water Outfall SW005 o Discharge Structure: 12 -inch diameter CMP culvert Spare equipment, parts, steel, iron, cable, and miscellaneous supplies are stored in the large, relatively flat gravel area. Some fabrication work may also be performed in the area associated with the steam station decommissioning effort. Equipment and supplies generally do not contain liquid. Storm Water Outfall SW004 o Discharge Structure: 20 -inch diameter CMP culvert o Location: West of the steam station powerhouse building o Drainage area: 2.38 acres o Area Description: This outfall conveys flows from the laydown yard and storage area to the west of the steam station powerhouse building between the warehouse storage racks and the maintenance building. Flows in the storage area flow overland to a ditch leading to the outfall. Area also includes the oil storage building. Drainage area is gravel and grassed with some covered roofs. o Material Storage/Controls: Oil storage area drains to a 200 gallon sump. Drums of chemicals, cleaners, batteries, oils, and lubricants were stored here during plant operation. Spare equipment, parts, steel, iron, cable, and miscellaneous supplies are stored in the relatively flat gravel area. Some fabrication work may also be performed in the area associated with the steam station decommissioning effort. Equipment and supplies stored in the laydown area generally do not contain liquid. Former NPDES Outfall 004 o Discharge Structure: 10 -foot diameter corrugated steel pipe o Location: Service water settling pond outfall pipe o Drainage area: 147 acres on-site and 600 acres offsite o Area Description: This outfall conveys overflows from the service water settling pond. This includes the outfalls for the Combined Cycle Station and off-site residential and urban areas. o Material Storage/Controls: On-site controls are addressed within the SW001 and SW002 outfalls. • Storm Water Outfall SW005 o Discharge Structure: 12 -inch diameter CMP culvert o Location: West of the steam station powerhouse o Drainage area: 0.07 acres o Area Description: This outfall conveys overland flows travel/working area on o Drainage area: the west side of the steam station powerhouse. o Material Storage/Controls: This outfall conveys overland flows from the construction No appreciable material storage is currently underway in storage, parking and laydown area and a much larger this area. The area will be impacted in the future by wooded area on the west side of the combined cycle temporary laydown and staging of materials during the station. decommissioning project. Storm Water Outfall SW006 o Discharge Structure: 8 -inch diameter CMP culvert o Location: West of the steam station powerhouse adjacent to the miscellaneous supplies are stored in the relatively flat powerhouse building o Drainage area: 0.33 acres o Area Description: This outfall conveys overland flows from the travel/working decommissioning effort. Equipment and supplies stored in area on the west side of the steam station powerhouse. o Material Storage/Controls: No appreciable material storage is currently underway in this area. The area will be impacted in the future by temporary laydown and staging of materials during the decommissioning project. Storm Water Outfall SW007 o Discharge Structure: Drainage feature/ditch outfall to service water settling pond o Location: North of Combined Cycle Station outfall o Drainage area: 21.12 acres o Area Description: This outfall conveys overland flows from the construction storage, parking and laydown area and a much larger wooded area on the west side of the combined cycle station. o Material Storage/Controls: No appreciable material storage is currently underway in this area. Spare equipment, parts, steel, iron, cable, and miscellaneous supplies are stored in the relatively flat gravel area. Some fabrication work or stockpiling may also be performed in the area associated with the steam station decommissioning effort. Equipment and supplies stored in the laydown area generally do not contain liquid. Storm Water Outfall SW008 o Discharge Structure: Drainage feature/ditch outfall to service water settling pond o Location: North of Combined Cycle Station outfall o Drainage area: 8.46 acres o Area Description: This outfall conveys overland flows from the construction storage, parking and laydown area and a much larger wooded area on the west side of the combined cycle station. o Material Storage/Controls: No appreciable material storage is currently underway in this area. Spare equipment, parts, steel, iron, cable, and miscellaneous supplies are stored in the relatively flat gravel area. Some fabrication work or stockpiling may also be performed in the area associated with the steam station decommissioning effort. Equipment and supplies stored in the laydown area generally do not contain liquid. Future Storm Water Outfall SW009 o Discharge Structure: 6-8 inch diameter HDPE pipe from pump discharge o Location: Service Water Settling Pond south of SW002 o Drainage area: 45.0 acres o Area Description: This outfall will convey noncontact storm water flows from drainage areas DA -A, DA -B, and DA -C by pump to the service water settling pond. Areas will be discharged only after contact water generating sources have been removed from the areas, including, but not limited to coal or coal combustion products. Currently these flows are pumped to the primary ash pond for treatment. o Material Storage/Controls: No appreciable material storage is planned for these areas. Future Storm Water Outfall SW010 o Discharge Structure: 6-8 inch diameter HDPE pipe from pump discharge o Location: Service Water Settling Pond south of SW002 o Drainage area: 77.8 acres o Area Description: This outfall will convey noncontact storm water flows from drainage areas DA -D, DA -E, and DA -F by pump to the north side of the secondary ash pond dike. Areas will be discharged only after contact water generating sources have been removed from the areas, including, but not limited to coal or coal combustion products. Currently these flows are pumped or discharged by gravity to the secondary ash pond for treatment. This area includes the existing dry ash stacks. Construction in this area that would generate potential contact water will be managed to discharge to the secondary ash pond for treatment. o Material Storage/Controls: No appreciable material storage is planned for these areas. However, future construction in the area of the ash stacks may result in generation of contact water which will be discharged to the secondary ash basin, as is the current protocol. Dan River Steam Station Stormwater Monitoring- July 2014 Stormwater samples were collected from ten Dan River Steam Station stormwater outfalls (see attached table) during a storm event on July 15, 2014, measuring 1.6 inches. Manual grab sampling was initiated within 15 minutes after rainfall began on-site. Samples were collected directly into properly preserved bottles and shipped on ice to Duke Energy's analytical laboratory in Huntersville, NC. Analytical parameters for analysis were: TSS, TDS, Oil &Grease, Cl, SO4, F, COD, Al, As, B, Ba, Ca, Cd, Cu, Cr, Fe, Mn, Mo, Mg, Ni, Pb, Sb, Se, Tl, Zn, Hardness and Hg. Storage and preservation techniques of the samples after collection, and prior to analyses, were followed according to Appendix A. Analyses were conducted by Duke Energy's Huntersville analytical laboratory(NC Wastewater Certification #248) and Pace Analytical Laboratories (NC Wastewater Certification # 12). Laboratory analytical methods used for each parameter are provided in Table 1 and analytical results are presented in Appendix B. Table 1. Parameter Method Reporting Limit Units L� COD HACH8000 20 mg/L DukeEnergy Chloride EPA300.0 1 mg/L DukeEnergy Fluoride EPA300.0 1 mg/L DukeEnergy Sulfate EPA300.0 1 mg/L DukeEnergy 011andGrease EPA1664B 5 ug/L PaceAnaltyical Mercury(Hg) EPA245.1 0.05 ug/L DukeEnergy Aluminum(Ai) EPA200.7 0.005 mg/L DukeEnergy Barium(Ba) EPA200.7 0.005 mg/L DukeEnergy Boron(B) EPA200.7 0.05 mg/L DukeEnergy Calcium(Ca) EPA200.7 0.01 mg/L DukeEnergy Hardness EPA200.7 0.19 mg/L(CaCO3) DukeEnergy Iron(Fe) EPA200.7 0.01 mg/L DukeEnergy Magnesium(Mg) EPA200.7 0.005 mg/L DukeEnergy Manganese(Mn) EPA200.7 0.005 mg/L DukeEnergy Zinc(Zn) EPA200.7 0.005 mg/L DukeEnergy Antimony(Sb) EPA200.8 1 ug/L DukeEnergy Arsenic(As) EPA200.8 1 ug/L DukeEnergy Cadmlum(Cd) EPA200.8 1 ug/L DukeEnergy Chromium(Cr) EPA200.8 1 ug/L DukeEnergy Copper(Cu) EPA200.8 1 mg/L DukeEnergy Lead(Pb) EPA200.8 1 ug/L DukeEnergy Molybdenum(Mo) EPA200.8 1 ug/L DukeEnergy Nickel(NI) EPA200.8 1 ug/L DukeEnergy Selenium(Se) EPA200.8 1 ug/L DukeEnergy Thailium(TI)LowLevel EPA200.8 0.2 ug/L DukeEnergy TDS SM2540C 25 mg/L DukeEnergy TSS SM2540D 5 mg/L DukeEnergy Appendix A Sample Preservation and Hold times Parametername Container' P_reservation22 Maximumh I in t ime" Table IB—fnorganicTests: 1.Acidity P, FP,G C001,56°C'" 14days. 2.Alkalinity P, FP,G C001,s6°C", 14days. 4.Ammonia P, FP,G Coo1,s6°C",H2SO4topH <2 28days. 9.13iochemical oxygendemand P, FP,G Cool,s6°C'" 48hours. 10,Boron P, FP,orQuartz HNO,topH <2 6months. 11.19romide P, FP,G Nonerequired 28days. 14.Biochemical oxygendemand,carbonaceous P, FP G Cool,s60C'" 48hours. 15.Chemical oxygendemand P, FP,G CooIA60C78,H2SO,topH <2 28days. 16.Chloride P, FP,G Nonerequired 28days. 17.Chlorine,totairesidual P, G Nonerequired Analyzewithin15 minutes. 21.Color P, FP,G Cool,s6°C", 48hours. 23-24.Cyanide,total or available(or CRTC) andfree P, FP,G Cool,s6°C'",NaOHtopH a10' 14days. °,reducingagentgoxidizer present 25.Fluoride P Nonerequired 28days, 27.Hardness P, FP,G HNO3or H2SO4topH <2 6months. 28.Hydrogen ion (pH) P, FP,G Nonerequired Analyzewithinl5 minutes. 31,43. Kfeldahlandorganic N P, FP,G Cool,s6°C1',H2SO,topH <2 28days. Table IB—Metals:' 18.Chromium VI P, FP,G Cool,s60C'",pH=9.3-9.7"' 28days. 35. Mercury(CVAA) P, FP,G HNO3topH <2 28days. 35. Mercury(CVAFS) FP, G; andFP- 5mUL12N HClor SmULBrCI" 90days." lined cap" 3,5-8,12,13,19, 20,22,26,29,30,32-34,36,37, 45, P, FP,G HNO3topH <2,or atleast 24 6months, 47,51, 52,58-60,62, 63,70-72, 74,75.Metals,except hoursprior toanalysis19 boron,chromium V1,andmercury 38.Nitrate P, FP,G Cool,s60C" 48hours. 39.141trate-nitrite P, FP,G Cool,560C'",HAO,topH <2 28days. 40.Nitrits P, FP,G Cool,s60C", 484ours. 41.0ilandgrease G Coolto56°C'a, HClor H2SO410 28days. pH <2 42.OrganicCarban P, FP,G Cool tos6°C78, HCI, H2SO4, or 28days. H3PO4topH <2 44.Orthophosphate P, FP,G Cool,tos6°C1tl24 Filler within 15minutes; Analyzewithin48 hours. 46.Oxygen,DissolvedProbe G, Bottleandtop Nonerequired Analyzewithinl5 minutes. 47. Winkler G, Bottleandtop Fixon siteandstoreindark Shours. 48.Phenots G Cool,s60CtB,H2SO,topH <2 28days. 49,Phosphorous(elemental) G Cool,s6°C'" 48hours. 50,Phosphorous,total P, FP,G Cool,560C'O,H2SO4topH <2 28days. 53.Residue,tatal P, FP,G Cool,s600 7days. 54.Residue, Filterable P, FP,G C001,566C", 7days. 55.Residue,Nonfilterable(TSS) P, FP,G Cool,56°C'` 7days. 56.Residue, Settleable P, FP,G Cool,s6°C'" 48hours. 57.Residue, Volatile P, FP,G C001,56°C", 7days. 61.Silica Por Quartz Coo1,560C", 28days. 64.Specificconductance P, FP,G Cool,56°01 28days. 65.Sulfate P, FP,G Cool,s6`0 28days. 66.Sulfide P. FP,G Cool,s6"C'",addzinc acetate 7days. plus sodiumhydrobde topes >9 67.Sulfite P, FP,G Nonerequired Analyzewithinl5 minutes. 68.Surfactants P, FP,G Cool,s6%C"` 48hours. 69.Temperature P. FP,G Nonerequired Analyze. 73.Turbidity P, FP,G 1 Cool,s6"C1" 48hours. "P"isforpolyelhylens;"FP"isfluoropolym er(polytetrafluoroethylene( PTFE); Teflon,"),orotherfl uoropolymer,unlessstatedotherwise InthisTablell;"Gisgiass;"PA"isanyplasticthatismadeofastedlizablematedal(polypropyleneorotherautoclavableplastic);"LDPE"is lowdensity polyethylene. Exceptwherenotedin thisTablellandthemethodfortheparameter,preserve eachgrab samplewithinl5minutes of collection. For a compositesamplecollectedwithanautomatedsample(e.g.,usinga24-hourcompositesample,see40CFR122.21(g)(7)(i)or4OCFRPart 403,AppendixE),refrigeratethesampleats6,CduringcollectionuniessspecifiedotherMseinthisTablellorinthemethod(s).Fora compositesampletobesplitintoseparatealiquotsforpreservationand/oranalysis..maintainthesampleat56°C,unlessspecifiedotherwise inthisTablel lorinthemethod(s),untilcollaction,splitting,andpreservationiscompleted. Addthepreservativetothesamplecontainerpdor tosam plecollectionwhenthepreservativewillnotcompromisetheintegdtyofagrabsample. acom positesample,oraliquotsplitfroma composite samplewithinl5minutesotcollection.Ifa compositemeasurernentisrequiredbuta composite samplewouldcompromise sample integdty,individualgrab samples mustbe collectedatprescribed timeintenrals(e.g„4 samplesover the courseofaday,at 6-hourintervals). Grabsamplesmustbeanalyzedseparatelyandthe concentrationsaveraged.Altematively,grab samplesmaybecollectedinthe Ifeldand composited Inthe laboratoryifthe compositingprocedureproducesresultsequivalenttoresultsproducedbyadthmeticaveragingolresultsof analysisofindividualgrabsamples.Forexamplesoflaboratorycompositfngprocedures,seeEPAMethodl664Rev.A(oilandgrease)and the procedures at 40CFR 141.34(t)(14)(iv) and(v) (volatileorganics). I ranspor[ationHazardousMateriaisRegulations(49CFR partl72).Thepersonoffedng such materialfortransportation isresponsiblefor ensuringsuch compliance. Forthepreservationrequirementorrabiell,the OfficeofHazardousMatedals,MateriaisTransportation Bureau, Departmentorrransportation hasdelermined that theHazardousMatedalsRegulaUonsdo notapply tothe foliowingmateriats:Hydrochlodc acid(HCI)inwater solulionsat conceniralionso(0.04%by weightodess(pHabout1.96orgreater; Nitdcacid(HNO3)inwater solutionsat concentrabonsof0.15%by weightodess(pHaboutl.62orgreater);Sulfuricacid(HzSOA)inwater solutionsat concentrationsof0.35%by weightodess(pH about1.15orgreater);and Sodiumhydroxide(NaOH)Inwater solutionsatconcentrationsof0.080%by weightodess(pH aboutl2.30odess). °Samplesshouldbeanalyzedassoonaspossibleafter collection.Thetimeslistedarethe maximum timesthatsamplesmaybeheld beforethestartofanalysisandstillbeconsideredvalld.Samplesmaybehetdforlongerpedodsonlyifthepermitteeor monitoringlaboratory hasdataonfiletoshowthat,forthespecifictypesofsamplesunderstudy,theanalytesarestabieforthelongertim e,andhasreceiveda vadancefromtheRegionalAdminislratorunderSec.136.3(e).Foragrabsample,theholdingtimebeginsatthetimeofcollecbon. Fora composite samplecollectedwithanautomatedsampler(e.g.,usinga24-hourcompositesampler;see 40CFRI22.21(a)M01or40CFRDart knowsthatashortertimeisnecessarytomaintainsampieslability.Seel 36.3(e)fordetalls.Thedateandtim eofcollectionofanindividual grabsampleisthedateandtimeatwhichthesampleiscollected.Forasetofgrabsamplestobecomposited,andthatareallcollectedon the samecalendar date, thedateofcollectfon is thedate onwhichthe sampiesarecollected. For asetofgrabsamples tobecomposited,and thatarecollectedacrosstwocalendardates,thedateofcollectionisthedatesofthetwodays;a.g.,Novemberl4-15.Foracomposite sample collectedautomaticallyon agivendate,thedateof collectionisthedateonwhichthesampteiscollected.Foracomposite sample collectedautomatically,andthatiscollectedacrosstwocalendardates,thedateofcollectionisthedatesofthe twodays;e.g.,Novemberl4- 15.Forstatic-renewaltoxicitytests,eachgraborcompositesamplemayalsobeusedtopreparetestsolutionsforrenewalat24h,48h, andlor 72h afterfirstuse, Ifstoredat0.6°C, Wthminimumhead space. 5ASTMD7365-09aspecif estreatmentoptionsforsamplescontainingo)ddants(e.g.,chlorine).Also,Section9060AofStandard MelhodsfortheExaminationofWater andWastewater (20thand2lst editions) addresses dechlorinationprocedures. eSampling, preservationandmiflgatinginterferences Inwater samplesfor analysis of cyanidearedescdbedirtASTM D7365-09a.There measuresdescribedin theanatytical testmethod. Anyremovalor suppressiontechniquenotdescdbedinD7365-ogaortheanalyticaftest methodmustbedocumentedalongwfth supportingdola. 'Fordissolvedmetals,filtergrabsampleswfthinl5minutesof cellectionandbeforeaddingpreservatives.Fora composite sample collectedwithanautomated sampler(e.g.,usinga24-hour composite sampler; see40CFR 122.21(g)(7)(i)or40CFR Part403,Appendix E), filterthesamplewithin 15minutesaftercompletionofcollectionandbeforeaddingpreservatives.Ifitisknownorsuspectedthatdissolved sampleintegrity willbe compromisedduring collectionofacomposite samplecollected automatically over time(e.g.,by Interchange ofametal betweendissolvedandsuspendediorms). collectandffltergrabsamplestobe composited(footnote2)inplaceofacompositesample collectedautomatically. °Guidanceapplies tosamples tobeanalyzedby GC,LC, or GC/MS for specific compounds. °if thesamplels not adjustedtopH 2, then thesamplemustbeanalyzedwithin sevendays of sampling. 10ThepH adjustment Isnotrequiredifacroleinwiltnotbemeasured. Samplesfor acroleinreceivingnopH adjustment mustbeanalyzed within3daysofsampling, ”WhentheextractableanalytesofconcemfallWthinasinglechemlcalcalegory.thespecifiedpreservativeandmaximumhotding times shouldbe observed for oplimumsaleguardofsampleintegdty(i.e.,useall necessary preservativesandholdfor theshortest timelisted). When theanalylesofconcem fallWthin twoor more chemicalcategories. the samplemay bepreservedby cooling tos6°C,reducingresidual chlodnewith0.008°.sodiumthiosulfate..stadngin thedark,andadjusting thepH to6-9;samplespreservedin this mannermaybeheld for sevendaysbeforeextractionandforfortydaysafterextraction. Exceptionsto thisoptionalpreservationandholdingtimeprocedurearenoted in footnote5(re?gardingtherequirement for thiosulfatereduction), and footnotesl2,13(regarding theanalysis ofbenzidine). ' If1,2-diphenylhydrazineis likelyto bepresent, ad)ust thepH of thesamplelo4.0t0.2topreventrearrangement tobenzidine. "Extracts may bestaredupto30daysat <0°C. 14 For theanalysis ofd=phenylnitrosamine.add0.008'n Na2&0.)andad)ust pH to7-10withNaOHWthln24 hoursof sampling. tSThepHadjustmentmaybeperformeduponreceiptatthelaboratoryand maybeomittedifthe samplesareextractedwithin72hours of collection. Forlheanalysis of aldrin,add0.006%Na2SZ03. 1ePlace sufficientice wfththe samplesinthe shipping containertoensurethaticeisstillpresentwhenthesamplesarriveatthe laboratory, However,evenificeispresentwhenthesamplesardve.immediatelymeasurethetemperatureohhesamplesandconfirmthat thepreservationtemperaturemaximumhasnotbeenexceeded. tntheisolatedcaseswhereit canbedocumentedthatthisholding lemperaturecannotbemet,thepermitteecanbegiventheoptionofon-sitetestingorcanrequestavariance.Therequesfforavadance shouldincludesupportrvedatawhichshowthattheto)acityoftheeffluentsamplesisnotreducedbecauseoftheinereasedholding temperature.Aqueoussamplesmustnotbefrozen. Mand-deliveredsam pl esusedonthedayofcollectiondonotneedtobecooledtoOto6 C prior_totest initiation '. Sam plescollectedforlhedeterminatfonoftracelevelmercury(<100ng/L)usingEPAMethod1631mustbecollectedintightiy- cappedfluoropolymerorglassbottlesandpreserved W thBrClorHClsolutionwithin48hoursotsamplecollection.Thetimetopreservation tilteredinthelaboratorywithin24hoursofthetimeofcallection, However,ifcircumstancesprecludeovemightshipment,thesamplesh befilteredinadesignatedcleanareaintheffeldinaccordanceWthproceduresgiveninMethod 1669. Ifsampleintegdtywfllnotbe maintainedbyshipmenttoandfiltrationinthelaboratory,thesamplemustbefilteredinadesignatedcleanareaintheffeld W thinthetime pedodnecessarytomaintainsampleintegdty.Asamplethathasbeencollectedfordeterminationottotalordissolvedtracelevelmercury mustbeanalyzed within90days of samplecollection. `BAqueoussamples mustbepreservedats60C,and shouldnotbe frozenunlessdatademonstrating thatsample freezingdoesnot adversely impactsampleintegrity is maintainedon fileandacceptedasvalidby theregulatory authority.Also,forpurposesofNPDES monitoring,thespecificationof"5°C"isusedinplaceohhe"4°C"and"<4°C"sampletemperaturerequirementslistedinsomemethods.Itis noinecessarytomeasurethesampletemperaturetothreesignificantfigures(1l100thof 1 degree); rather,threesignificantfiguresare specifiedsothatroundingdownto6°Cmaynotbeusedtomeetthes6°Crequirement.Thepreservationtemperaturedoesnotapplyto samples thatareanatyzedimmediately (less thanl5minutes). 7°Anaqueoussample maybecoliectedandshippedwithoutacidpreservation.However,acid mustbeaddedatleast24hoursbefore analysistodissolveanymetalsthatadsorbtothecontainerwalls.lithesample mustbeanalyzedwithin24hoursolcollection,addtheacid Immediately (seelootnote 2). Soiland sediment samplesdonotneed tobepreservedwithacid. The allowancesin this footnotesupersede the preservationandholdingtimerequfrements intheapprovedmetaismethods. 76Toachievethe28-dayholdingtime,use theammonium sulfatebuffersolutionspecifiedinEPAMethod218.6.Theallowanceinthis footnotesupersedespreservationandhotdingtimerequirementsintheapprovedhexavalenichromiummethods, unlessthissupersession would compromisethemeasurement,inwhichcaserequirements inthemethodmustbefollowed. the timeof samplefiltrationtoelution forsamples filteredinthefield. 22Sampleanalysisshouldbeginassoonaspossibleafterreceipt,,sampleincubationmusibestartednolaterthan8hoursfromtimeof collection. 2317or fecalcoliformsamples for sewagesludge(biosolids)only,theholding timeisextended to24hoursfor the following sample types usingeither EPA Method1680(LTB-EC) or 1681(A-1):Class Acomposted, Class B aerobically digested,andClass B anaerobically digested. a`Theimmediatefiltrationrequirementinorthophosphate measuremenlisto assessthedissolvedorbio-availableformof orthophosphorus(i, e.,thatwhichpassesthrougha0.45-micronfflter),hencetherequirementtofilterthesampleimmediatelyuponcollection (i.e., withinl5minutesof collection). [38 FR 28758, Oct.16,1973 Appendix B Analytical Data Parameter Units SWO07 SWOOS Not in Supplemental Information= SWO04= SWO03= SWOO5 Former NPDFS Outfall 009 SWOOI/ SW002 SWO06 Drains to Future Outfall SWO10 Oil & Grease mg/I < 5.0 < 5.0 < 5.0 < 5.0 < S.0 < 5.0 < 5.0 < 5.0 c 5.0 < 5.0 COD mg/I < 20 < 20 23 < 20 < 20 < 20 25 < 20 < 20 23 Cl - Chloride (00940) mg/I 3.7 < 1 < 1 1.4 3.1 1.5 8.7 14 2.8 12 Fluoride mg/I < 1 < 1 < 1 < 1 1 < 1 < 1 < 1 < 1 < 1 504 - Sulfate (009451 mg/I 64 82 2 13 13 13 42 37 49 47 Hg - Mercury (71900) pg/I < 0.05 < 0.05 < 0.05 0.16 0.21 0.06 < 0.05 < 0.05 0.25 < 0.05 Al - Aluminum (01105) mg/I 14.6 8.01 0.275 105 92.9 0.491 0.775 0.541 97.7 2.31 Ba - Barium (01007] mg/I 0.168 0.115 0.007 0.587 0.563 0.019 0.047 0.074 0.686 0.085 B - Boron (01022) mg/I < 0.05 < 0.05 < 0.05 c 0.05 < 0.05 c 0.05 0.198 < 0.05 < 0.05 < 0.05 Ca-Calcium mg/1 13 37.2 1.55 14 17.7 9.19 24.3 22.1 36.3 28.9 Hardness mg/I (CaCO3) 77.8 125 4.4 141 144 25.7 82.4 69.4 201 93.2 Fe - iron (OI045) mg/I 25 13.2 0.319 188 162 0.733 3.83 3.86 182 4.32 Mg-Magnesium mg/I 11 7.8 0.129 25.8 24.3 0.668 5.28 3.44 26.8 5.11 Mn - Manganese (01055) mg/I 0.71 0.323 0.014 2.37 2.52 0.035 O.S41 1.73 2.37 0.618 Zn - Zinc (01092) mg/I 0.105 0.056 0.301 0.539 0.702 0.691 0.332 0.04 0.652 0.036 Sb - Antimony (010971 WjI < 1 < 1 c 1 < 1 < 1 1.53 < 1 < 1 < 1 < 1 As - Arsenic (010021 1 WjI 1.31 < 1 1.41 3.72 4.99 1.35 32.5 < 1 4.29 < 1 Cd - Cadmium (01027) pg/I < 1 < 1 < 1 < 1 < 1 1.85 < 1 < 1 < 1 < 1 Cr - Chromium 101034) µg/I 41.5 22.7 < 1 130 111 6 1.54 1.36 127 5.41 Cu - Copper (010421 µg/t 18.2 15.2 8.26 103 104 75 33.6 2.17 116 5.89 Pb - lead (01051) µg/I 11.8 2.74 18.3 66.2 81.8 21.9 4.2 < 1 79.4 1.55 Molybdenum (Mo) µg/I < 1 4.23 < 1 < 1 < 1 4.1 14.2 1.72 < 1 2.14 Ni - Nickel (01067) Ng/1 22.4 11.2 < 1 77.4 76.2 2.39 2.61 2.69 74.8 4.26 Se - Selenium (011471 µg/t < 1 < 1 6.91 1.99 4.72 10.6 2.96 < 1 6.41 < 1 T1- Thallium (01059) WjI 0.344 < 0.2 < 0.2 0.81 0.892 < 0.2 < 0.2 < 0.2 0.992 < 0.2 TDS - Total Diss. Solids (70300) mg/I 100 240 c 25 530 810 76 170 140 600 190 TSS-Total Suspended Solids mg/1 440 310 7 2700 1700 23 31 28 2600 62 pH S.U. 6.5 6.44 6.77 7.27 7.08 7.35 7.47 7.82 7.37 7.55 Temperature 'C 277 27.8 26.7 27.9 29.3 25.8 23.1 27 24.1 25.9 Specific conductance PS/cm 169 197 18.7 58.5 77.9 78.3 253 193.3 179.7 244 Notes: 1 Roof drain from the retired powerhouse building a SWO03, SWO04 were obtained from areas undergoing temporary construction NORTH CAROLINA 11 Project Location I ` t 87 G h 0 5,000 10,000 20,000 Feet , r Z a 1 r -�e = + ya fr' r �+`I 7 r �� iv r '41 R �, �I 1vAA ''f'I I IS) LVA NIA cau r,M NOF LtW1: O L I N A "rno. _. .' Eisen � y R6dkinglna r Coy, my --#° ` len ( .L . , pW !U-1 Sources Esri, Del -or mf GEBCO, USGS, FAO, I Survey, Esd Japan, MF User Communitv j' Pond ,Primary Pond ❑ fie mTom tMmia p. dAN, �O se, IGN, h hina (Hong Kong), sw, a ant P Corp, NL. 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